An enzyme speeds up a reaction by

lowering the activation energy.

What happens when enzymes are heated to a high temperature?

The shape of the enzyme are changed and it denatures

The enzymes' amino acid sequence changes.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzyme decrease the activation energy of the reaction.

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzymes reverse the direction of the reaction.

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

What is the function of an enzyme?

enzymes speed up chemical reactions

enzymes break themselves into small pieces

enzymes slow down chemical reactions

enzymes combine products to form reactants

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

Enzymes

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-5, HS-LS1-7, HS-PS1-4

+1

Standards-aligned

Melissa Humphries

Used 219+ times

FREE Resource

22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a substance called if it speeds up a chemical reaction?

reusable

catalyst

specific

fragile

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

With what 3 letters do enzymes typically end?

-ose

-ase

-ese

-tic

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Enzymes are an example of

Lipids

Carbohydrate

Protein

Nucleic Acid

Each enzyme only has 1 substrate that will fit its active site. What is this called?

reusable

catalyst

specific

fragile

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the diagram, what is letter A?

product

substrate

enzyme-substrate complex

active site

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Letter D...

active site

enzyme

substrate

products

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Letter B...

active site

enzyme

substrate

products

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Enzymes

22 questions

What is a substance called if it speeds up a chemical reaction?

With what 3 letters do enzymes typically end?

Enzymes are an example of

Each enzyme only has 1 substrate that will fit its active site. What is this called?

In the diagram, what is letter A?

Letter D...

Letter B...

Letter C...

Letter E...

An enzyme speeds up a reaction by

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